GREAT PLANES Super Sportster 90 Instruction Book page 11

D D 15. Lightly sand the tops of the ribs to blend
with the notched trailing edge, if necessary;
then position one of the 3/32" x 1-13/32" x 33"
balsa trailing edge sheets so the Rt. end is
even with the outside edge of the tip rib and
glue it in place.
D D 16. If you are building a taildragger, you should
install the grooved hardwood landing gear
block at this time. Refer to steps 20 - 23 for
the correct procedure.
LI D 17. Before applying the leading edge sheeting
in the next step, use your T-bar to lightly sand off
the edges of the shear webs and the rear corners of
the spars to blend with the ribs.
D D 18. Prepare the 3/32" x 3-27/32" x 33" balsa
bottom leading edge sheeting by sanding
one edge to a slight bevel so it will fit snugly
against the back of the leading edge. If you are
building a taildragger, carefully cut out an
opening in the leading edge sheeting for the
landing gear block.
NOTE: It will be helpful to have the following items
handy for the next step . . . thin CA, thick CA, a wet
cloth, masking tape and T-pins.
D D 19. Position the leading edge sheeting so the
Rt. end is even with the outside edge of the tip
rib. Using thin CA, glue the front (beveled)
edge of the leading edge sheeting to the back
edge of the leading edge. Wet the top surface
of the sheeting so it will bend easier. Apply
thick CA glue to the top edge of the ribs and
to the front half of the spar, then immediately
bend the sheeting down onto the ribs and spar.
Hold the sheeting down with masking tape,
pins and your hands until the glue has set.
NOTE: Do not install the TOP leading edge
sheeting until after joining the left and right
wing panels.
D D 20. Trial fit the long grooved hardwood land-
ing gear block into the notches in the W-2
ribs (see the landing gear detail drawing on
the wing plan for proper positioning). File the
notches if necessary for a good fit. Now use
epoxy to securely glue the block in place.
D D 21. Glue the short grooved hardwood block to
the landing gear block and to the 1/16" ply
doubler as shown on the plan and in the photo,
using 5-minute epoxy. After the glue has firmly
set, insert a 3/16" diameter drill bit down into
the groove in the short hardwood block, then
continue drilling through the long hardwood
block.
D D 22. Glue the 1/2" x 3/4" x 1/2" hardwood block
to the other end of the landing gear block and
to the 1/16" ply doubler, using 5-minute epoxy.
D D 23. Trial fit the 3/16" diameter main landing
gear wire into the landing gear block at this
time. Cut or file the groove and hole in the
landing gear block as necessary for a good fit.
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